hello firstly, how did you install the mod? it should literally be as simple as dropping a .zip file into the mods folder in your beamng user folder. secondly, where did you download the mod? if you downloaded it from world of mods or some site like that, that might be your answer. finally, that mod is ancient. as in more than 5 years old. it was unfinished when it was released i have it installed in my mods folder. it has visible texture issues so it may not really work at all for you. the last time i checked it was around 6 months ago.